I am going through with the strange situation. My requirment is to get the EDI from the ftp folder and place in the local folder from local folder i have to pick files in list format and process one by one. while processing files in the string list format, I observed one thing. if the first file get faild in the convertovalues service. then its giving error for the second file at envelpoProcess service. if i run the same service only for the second file then its not giving errors. Can anybody help me in this. Thanks in advance.